reported.
Five months after Nancy's death, the home, which was run by Larchwood Care, was then shut down in June.
The OAP's family claim they have been left in the dark and never received an explanation of what happened after she suffered from the facial injuries.
Her son Colin, 65, has been left furious about the situation and he believes his mum was neglected by the care home.
He told the Daily Record: "We are still very angry about the awful conditions our mum must have lived in during the last year of her life.
"The home didn't care for her the way they should have done. When we visited, we could see she wasn't clean and she looked like she wasn't being looked after.
"When my sister visited and found her with those injuries on her face it was a big shock.
"But the care home manager told us they didn't know what had happened to her because nothing was reported."
After the family were aware of her facial injuries, Nancy, who suffered from dementia, had a medical assessment at hospital.
They claim doctors found other bruises on her body - and blood tests confirmed she was also dehydrated.
Larchwood Care carried out a review on the grandmother's care before it closed down.
The investigation found that there were "failings in communication".
Colin claims his family were never told of the outcome of the review and still don't know what happened to his mum.
He added: "It constantly plays on my mind that we never got the answers we need and no one was ever held accountable for what happened to our mum.
"Someone in her condition should have been looked after. The staff were paid to look after her. But the conditions she was left living in were dreadful.
"Our mum was a lovely, caring, charitable person and to know she suffered the way she did is really difficult."
A spokesperson for Larchwood Care said: "We understand Mrs Donnelly’s family’s concerns and acknowledge their considerable distress following the loss of a much-loved family member.
"Our investigation into these matters identified some failings with communication and we apologise for the impact this has had on the Donnelly family.
"In acknowledging this failing we have reviewed our policies and made the necessary changes."
"In 2021 the matter was referred to the Care Inspectorate and the Adult Support and Protection team.
"The home, which is now closed, fully co-operated with the outside agencies looking into the issues raised.
"We accepted and reacted to the feedback from both agencies throughout the investigation."
A spokesperson for the Care Inspectorate said: "We aware of a concern raised about the quality of care experienced by an individual at this care service, which has since cancelled its registration with the Care Inspectorate.
"The concern was investigated by the relevant local authority under Adult Support and Protection procedures."
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